c++ - 创建可点击的 "buttons"C++

Question

嘿，我基本上只是想在我的小控制台应用程序中制作一个可以按下的按钮。这是我用来获取光标位置的片段

if (GetKeyState(VK_LBUTTON) < 0) {

{
POINT p;
if (GetCursorPos(&p))
{
cout<<"\nSCREEN\nx coord->";
cout<<p.x;
cout<<"\ny coord->";
cout<<p.y;

}
SetConsoleTitle("paint");
HWND hWnd;
hWnd = FindWindow(NULL, "paint");


if (ScreenToClient(hWnd, &p));
{
cout<<"\n\nWINDOW\nx coord->";
cout<<p.x;
cout<<"\ny coord->";
cout<<p.y;
}
int pwx;
int pwy;

pwx=p.x;
pwy=p.y;

这只是将鼠标坐标相对于屏幕和窗口打印到控制台。我有一个功能，我可以在其中绘制 ascii 符号 219，以便在鼠标所在的任何地方以及只要按住鼠标左键时在控制台中基本上“绘制”。现在:我如何检测控制台字符内的点击？

    cout<<"press here to clear the screen->[x]";

2 个方括号和“x”应该是可按下的。我只能用上面的代码搜索像素，但不能搜索行和列..有没有办法做到这一点，还是我完全偏离了轨道？

我正在使用代码:: block 感谢您的帮助!

[我一周前才开始编程，所以很好:)]

Answer 1

这里有一些控制台鼠标处理代码可供研究。它在某种程度上完成了您编写的所需功能，它可以在 Visual Studio 上运行，但我希望它也可以在 code::blocks 上运行。更多信息可以在这里找到:https://msdn.microsoft.com/en-us/library/windows/desktop/ms685035(v=vs.85).aspx

#include <iostream>
#include <stdio.h>
#include <windows.h>


HANDLE hStdin; 
DWORD fdwSaveOldMode;

void ErrorExit(LPSTR);
void KeyEventProc(KEY_EVENT_RECORD); 
void MouseEventProc(MOUSE_EVENT_RECORD); 
void ResizeEventProc(WINDOW_BUFFER_SIZE_RECORD);
void GetMousePosWin(MOUSE_EVENT_RECORD);
void gotoXY(int x, int y);

HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
COORD CursorPosition;



int main() 
{ 
    DWORD cNumRead, fdwMode, i; 
    INPUT_RECORD irInBuf[128]; 
    int counter=0;

    // Get the standard input handle. 

    hStdin = GetStdHandle(STD_INPUT_HANDLE); 
    if (hStdin == INVALID_HANDLE_VALUE) 
        ErrorExit("GetStdHandle"); 

    // Save the current input mode, to be restored on exit. 

    if (! GetConsoleMode(hStdin, &fdwSaveOldMode) ) 
        ErrorExit("GetConsoleMode"); 

    // Enable the window and mouse input events. 

    fdwMode = ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT; 
    if (! SetConsoleMode(hStdin, fdwMode) ) 
        ErrorExit("SetConsoleMode"); 

    // Loop to read and handle the next 100 input events. 
    gotoXY(33,10);
    std::cout << "\xDB Menu Item 1";
    gotoXY(33,12);
    std::cout << "\xDB Menu Item 2";
    gotoXY(33,14);
    std::cout << "\xDB Menu Item 3";
    gotoXY(33,16);
    std::cout << "\xDB Quit";
    while (!counter)//++ <= 200) 
    { 
        // Wait for the events. 

        if (! ReadConsoleInput( 
            hStdin,      // input buffer handle 
            irInBuf,     // buffer to read into 
            128,         // size of read buffer 
            &cNumRead) ) // number of records read 
            ErrorExit("ReadConsoleInput"); 

        // Dispatch the events to the appropriate handler. 

        for (i = 0; i < cNumRead; i++) 
        {
            switch(irInBuf[i].EventType) 
            { 
            case KEY_EVENT: // keyboard input 
                KeyEventProc(irInBuf[i].Event.KeyEvent); 
                break; 

            case MOUSE_EVENT: // mouse input 
                MouseEventProc(irInBuf[i].Event.MouseEvent);
                gotoXY(33,8);
                GetMousePosWin(irInBuf[i].Event.MouseEvent);
                break; 

            case WINDOW_BUFFER_SIZE_EVENT: // scrn buf. resizing 
                ResizeEventProc( irInBuf[i].Event.WindowBufferSizeEvent );
                break; 

            case FOCUS_EVENT:  // disregard focus events 

            case MENU_EVENT:   // disregard menu events 
                break; 

            default: 
                ErrorExit("Unknown event type"); 
                break; 
            } 
        }
    } 

    // Restore input mode on exit.

    SetConsoleMode(hStdin, fdwSaveOldMode);

    return 0; 
}

VOID ErrorExit (LPSTR lpszMessage) 
{ 
    fprintf(stderr, "%s\n", lpszMessage); 

    // Restore input mode on exit.

    SetConsoleMode(hStdin, fdwSaveOldMode);

    ExitProcess(0); 
}

VOID KeyEventProc(KEY_EVENT_RECORD ker)
{
    printf("Key event: ");

    if(ker.bKeyDown)
        printf("key pressed");
    else printf("key released");
}

VOID MouseEventProc(MOUSE_EVENT_RECORD mer)
{
#ifndef MOUSE_HWHEELED
#define MOUSE_HWHEELED 0x0008
#endif

    gotoXY(33,6);
    printf("Mouse event:                                               ");

    switch(mer.dwEventFlags)
    {

    case 0:
        if(mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
        {
            gotoXY(46,6);
            printf("left button pressed");
        }
        else if(mer.dwButtonState == RIGHTMOST_BUTTON_PRESSED)
        {
            gotoXY(46,6);
            printf("right button pressed");
        }
        else
        {
            gotoXY(46,6);
            printf("button press");
        }
        break;
    case DOUBLE_CLICK:
        gotoXY(46,6);
        printf("double click");
        break;
    case MOUSE_HWHEELED:
        gotoXY(46,6);
        printf("horizontal mouse wheel");
        break;
    case MOUSE_MOVED:
        gotoXY(46,6);
        printf("mouse moved");
        //gotoXY(12,13);
        //GetMousePosWin();
        break;
    case MOUSE_WHEELED:
        gotoXY(46,6);
        printf("vertical mouse wheel");
        break;
    default:
        gotoXY(46,6);
        printf("unknown");
        break;
    }

}

// get Window pos through windows api
void GetMousePosWin(MOUSE_EVENT_RECORD mer)
{
    int x,y;
    // creates the handle i need to use
    //HANDLE OutputH;
    INPUT_RECORD Inrec;
    DWORD evRead;
    HANDLE hStdIn;
    DWORD dwMode;
    bool Captured=false;

    hStdIn = GetStdHandle(STD_INPUT_HANDLE);
    dwMode = ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT;

    if( SetConsoleMode( hStdIn, dwMode | ENABLE_MOUSE_INPUT) == TRUE)

        GetConsoleMode(hStdIn, &dwMode);
        SetConsoleMode(hStdIn, (dwMode & (ENABLE_MOUSE_INPUT)));

        // grab the handle to the console so i can use it
        //OutputH = GetStdHandle(STD_OUTPUT_HANDLE);
        //printf("Strated"); //Debug line.

        do
        {
            PeekConsoleInput(hStdIn, &Inrec, 1, &evRead);

            if( evRead ) 
            { 
                ReadConsoleInput(hStdIn, &Inrec, 1, &evRead);
                x= Inrec.Event.MouseEvent.dwMousePosition.X ;
                y= Inrec.Event.MouseEvent.dwMousePosition.Y ;
                switch (Inrec.EventType )
                {

                case MOUSE_EVENT:
                    {
                        Captured = true;
                        gotoXY(33,8);
                        std::cout << "x->  " << x << " ";
                        gotoXY(43,8);
                        std::cout << "y->  " << y << " ";
                        break;  
                    }
                }
            }

        }while(!Captured);

    if((x==33 && y==10) && mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
    {
        gotoXY(47,10);
        std::cout << "\xFB";
        gotoXY(33,21);
        std::cout << "You picked menu one";
        Sleep(1200);
        gotoXY(47,10);
        std::cout << " ";
        gotoXY(33,21);
        std::cout << "                   ";
    }
    if((x==33 && y==12) && mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
    {
        gotoXY(47,12);
        std::cout << "\xFB";
        gotoXY(33,21);
        std::cout << "You picked menu two";
        Sleep(1200);
        gotoXY(47,12);
        std::cout << " ";
        gotoXY(33,21);
        std::cout << "                   ";
    }
    if((x==33 && y==14) && mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
    {
        gotoXY(47,14);
        std::cout << "\xFB";
        gotoXY(33,21);
        std::cout << "You picked menu three";
        Sleep(1200);
        gotoXY(47,14);
        std::cout << " ";
        gotoXY(33,21);
        std::cout << "                     ";
    }
    if((x==33 && y==16) && mer.dwButtonState == FROM_LEFT_1ST_BUTTON_PRESSED)
    {
        gotoXY(40,16);
        std::cout << "\xFB";
        gotoXY(33,21);
        std::cout << "You picked Quit";
        Sleep(1200);
        gotoXY(40,16);
        std::cout << " ";
        gotoXY(28,21);
        exit(0);
    }
}

VOID ResizeEventProc(WINDOW_BUFFER_SIZE_RECORD wbsr)
{
    printf("Resize event\n");
    printf("Console screen buffer is %d columns by %d rows.\n", wbsr.dwSize.X, wbsr.dwSize.Y);
}

void gotoXY(int x, int y) 
{ 
    CursorPosition.X = x; 
    CursorPosition.Y = y; 
    SetConsoleCursorPosition(console,CursorPosition); 
}